US2451331A - Electrolytic recording - Google Patents

Electrolytic recording Download PDF

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Publication number
US2451331A
US2451331A US632547A US63254745A US2451331A US 2451331 A US2451331 A US 2451331A US 632547 A US632547 A US 632547A US 63254745 A US63254745 A US 63254745A US 2451331 A US2451331 A US 2451331A
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US
United States
Prior art keywords
acid
color
gram
electrolytic
records
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US632547A
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English (en)
Inventor
Greig Harold Grey
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RCA Corp
Original Assignee
RCA Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE469609D priority Critical patent/BE469609A/xx
Priority to NL66548D priority patent/NL66548C/xx
Application filed by RCA Corp filed Critical RCA Corp
Priority to US632547A priority patent/US2451331A/en
Priority to GB35509/46A priority patent/GB630146A/en
Priority to FR937567D priority patent/FR937567A/fr
Application granted granted Critical
Publication of US2451331A publication Critical patent/US2451331A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/23—Reproducing arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/20—Duplicating or marking methods; Sheet materials for use therein using electric current
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B41/00—Special methods of performing the coupling reaction

Definitions

  • the present invention relates to the electrolytic production of colored records and particularly to the use in such a method of compositions which are designed to give on a light background dark blue gray color images which simulate black in color.
  • Afurther object of the present invention to employ a nitrogen containing organic compound for increasing the darkness of the image of the records.
  • the particular diazotizable amine? contem# plated by the presentinvention isb'enzidine'- disulfonic acid.
  • YNo other diazotizaiblle amine has been found which will Ifunction in the desired relationship to yield 4the lblack appearing records on -a light background required herein.
  • ii benzidine monosulfonic acid appears in the composition even as -an impurity, it aiect's the stability of the 1solution by forming Furthermore, such compound if present shifts the shade of t-he recorded c-olor towards purple.
  • X is hydrogen, an acylamino groupl such as acetylarnino,y propionylamino, benzoylamino, lfuroylamino 'and the like,-alkyl I.such as methyl, ethyl, propyl, butyLoctyl and the like,
  • alkoxy y such as methoxy, ethoxy, propoxy, butoxy and the like, halogen such as chlorinebromine and the like, and aryloxysuch as phenoxy and the like.
  • X is a substituent group, it may be at-y V tache'd at any position ortho, meta-,vA orfrparato the amide linkage in the 8-position of the naphthol ring.
  • X is a substituent group, it may be at-y V tache'd at any position ortho, meta-,vA orfrparato the amide linkage in the 8-position of the naphthol ring.
  • acetyl-pamino benzoyl H acid benzoyl maminobenzoyl H acid, toluoyl H acid; rrr-methoXy-benf Y zoyl H acid, p-phenoXy-benzoyl H acid, Vp-ethyl-V benzoyl H acid, m-butyl-benzoyl H acid, ⁇ 11a-'chloro- Y benzoyl H acid, and the like.
  • the other 'couplingV cornpoi'u'rd ⁇ containing 'the reactive methylene group is a diac'etoacetyl. alkylenepolyamine in which the alkylene. chain may tie-interrupted by irnino. ⁇
  • Such compounds have the following n stru ctural ⁇ formula Qin-which Y isan alkyicnc rcdicarcr such-radica t interrupted by an imino group. Examples ,ofV
  • the hue or color of the records is dependent to Y a large extentV upon the ,proportions of thecomponents "formingfthe dyestuf of the'iinags there-y of and thisV is particularly true
  • V'as regards the lcoupling components.
  • the benzidine-3.3disul Afcnic acid is used in the ratio cf about .02 1:0.'036 5 I vgram mol perliter with the proportions ,ofV the coupling components as subsequently stated has relatively llittle 'eecton the color of Vthe image records. If th'eaymount be decreased below .02.
  • solubility of this .compound doesnot .a sufcient quantitvoftheY-s'ame to remain .in soluf non to produce the dcsircdblack shade. while;
  • Another feature of the invention is the finding that ,the darkfl r ness of the color may be considerably improved if there be present in the recording solution a quantityfof an aliphatic compound containing-a thio amide group in which the nitrogen atom of the amide is disubstituted by hydrogen.
  • Suitable examples of Compounds within this category are thiourea, thiosinamine, thiocarbamic acid and the like.
  • tralinorganicsalt such as sodium chloride, so-;
  • the primary're'quisite is that the current produce a highl enough concentration of hydrogen ions at the surface of the positive electrode to overcome the initial alkalinity of the wet carrier andallow for nitrousacid formation and -diazotization of the benzidine-3.3disulfonic acid.
  • Thev upper limitjof ⁇ the current density is determined by either that density at which the conditions.
  • Theinvention is. further illustrated' bythe following examples but it is to beunderstood that l the inventionis not 'restricted thereto.
  • a recording solution is prepared by the method *previously indicated from .03 gram mol of benzi- "dine-disulfonic acid, .0104 gram mol of ben-4 -Zoyl Hjacid, .88, gramlmol'of sodium hydroxide (2.5 Ns'oluti'on) .39 gram mol of sodium chloride, .035 gram molofgdiacetoacetyl ethylene diamine, .0526 gram ymol'of thi'oure'a,.l'39 gram mol of sodium nitrite 'and a literA of'water..
  • Example II The composition is the same as in Example I except that there is added to the composition .5 gram per liter of the wetting agent obtained b-y condensing benzene sulfonic acid with chlorinated kerosene.
  • Example III The procedure is the same as in Example I excepting that there is employed .0273 gram mol of benzidine-3-3'-disulfonic acid, .0094 gram mol of benzoyl H acid and .05 gram mol of diacetoacetyl ethylene diamine.
  • Example IV The procedure is the same as in Example I excepting that there is employed .025 gram mol of benzidine-3-3-disulfonic acid, .022 gram mol of benzoyl H acid and .0292 gram mol of ⁇ diacetoacetyl ethylene diamine.
  • the recorded color is a sufliciently dark one to give good contrast on a yellow tinted background.
  • Example V The procedure is the same as in Example I excepting that the benzoyl H acid is replaced by an equivalent amount of benZoyl-p-amino-benzoylI-Iacid.
  • Aprocessvof 4producing colored image rec- '.oi'dsfsimulati-ng :blackon a light background on :aA traveling carrier whichrfcomprises treating the carrier with an alkaline solutio'ricontaining as its ⁇ essential' components ⁇ benzidinea'i.3'disulionic 'f acid Tin' an amount ranging from .02 to .036 gram Amol per liter of solution, an alkali metal nitrite :ma sufficient amount to effect tetrazotization of the ⁇ benzidine-B-disulfonic acid, a neutral elec'- trolyte in a sufficient quantity to lfacilitate the Apassage of the electrolyzing current, and as coupling components .0292 to'.05 gram mol per liter of solution of adiacetoacetyl alkylene polyamine Vand '.0094 to .020 gram.
  • X is selected from the class consisting of hydrogen, acylamino, alkoxy, alkyl, halogen and aryloxy, and subjecting the treated carrier to the action of an electrolytic recording current.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)
  • Color Printing (AREA)
  • Coloring (AREA)
  • Paper (AREA)
US632547A 1945-12-03 1945-12-03 Electrolytic recording Expired - Lifetime US2451331A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE469609D BE469609A (en)van) 1945-12-03
NL66548D NL66548C (en)van) 1945-12-03
US632547A US2451331A (en) 1945-12-03 1945-12-03 Electrolytic recording
GB35509/46A GB630146A (en) 1945-12-03 1946-11-29 Improvements in or relating to electrolytic recording
FR937567D FR937567A (fr) 1945-12-03 1946-11-30 Procédé de production d'enregistrements en images colorées sur un support en mouvement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US632547A US2451331A (en) 1945-12-03 1945-12-03 Electrolytic recording

Publications (1)

Publication Number Publication Date
US2451331A true US2451331A (en) 1948-10-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
US632547A Expired - Lifetime US2451331A (en) 1945-12-03 1945-12-03 Electrolytic recording

Country Status (5)

Country Link
US (1) US2451331A (en)van)
BE (1) BE469609A (en)van)
FR (1) FR937567A (en)van)
GB (1) GB630146A (en)van)
NL (1) NL66548C (en)van)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606807A (en) * 1948-12-03 1952-08-12 Rca Corp Electric marking
DE1094274B (de) * 1956-09-21 1960-12-08 Addressograph Multigraph Verfahren und Einrichtung zur Erzeugung von Schriftbildern
US3506641A (en) * 1965-04-05 1970-04-14 Minnesota Mining & Mfg Diazo dyestuffs

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776252A (en) * 1953-04-23 1957-01-01 Faximile Inc Dry electrical recording medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306471A (en) * 1937-12-08 1942-12-29 Rca Corp Electrolytic facsimile recording

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306471A (en) * 1937-12-08 1942-12-29 Rca Corp Electrolytic facsimile recording

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2606807A (en) * 1948-12-03 1952-08-12 Rca Corp Electric marking
DE1094274B (de) * 1956-09-21 1960-12-08 Addressograph Multigraph Verfahren und Einrichtung zur Erzeugung von Schriftbildern
US3506641A (en) * 1965-04-05 1970-04-14 Minnesota Mining & Mfg Diazo dyestuffs

Also Published As

Publication number Publication date
GB630146A (en) 1949-10-06
FR937567A (fr) 1948-08-20
NL66548C (en)van)
BE469609A (en)van)

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